” In November, MIT grad student Dhairya Dand blacked out at a party and woke up in the hospital. Some people might use that as a wake-up call to lay off the tequila shots for a few weekends, but Dand, an engineer and former educational toy designer, did one better. Three weeks later, he had created a set of glowing ice cubes called Cheers that let you know when you’re going too hard.

A circuit enmeshed in an edible jelly mold monitors the number of sips taken, using an accelerometer that tracks the drink’s motion, and calculates how drunk you are based on a timer. Using three cubes with different LED lights, your drink changes color from green to orange to red, letting you know when you should take it easy. ”